Harrow



(Nd Model.)

' H. COBB.

v HARR W; I y N0f284,278. Patented Sept. 4, 1883-.

M12632. V [22 men $02; I Q 2m A? 4 5 2242 2M 7 1 N. PETERS. mm-mmn m. Washington. a. c.

; UNITED STATES PATENT OFFICE.

HIRAM cone, or KALAMAZOO, MICHIGAN.

HARROW.

SPECIFICATION forming part of Letters Patent No. 284,278, dated September 4, 1883. Application filed June 11, 1883. (No model.) I

i To all whom it may concern.-

Be it known that I, HIRAM COBB, a citizen of the United States, residing at. Kalamazoo, county of Kalamazoo, State of Michigan, have invented a new and useful Harrow, of which the following is a specification.

My invention consists in certain combinations of improved parts in that class'of harrows which are'provided with hinged springactuated shares.

In thedrawings forming part of this specification, Figure lis a side elevation of ashare and spring with theshare-beam in cross-see;

tion; Fig. 2, a broken detached part in perspective; Fig. 3, a top view of Fig. 1 with thespring broken away, and Fig. 4 a crosssection on a line with the edge of the spring more easily and cheaply made than formerin Fig. 3.

Theshare or tooth P has an upper, straight portion, as in former devices,connecting with a hinged tooth-support. The tooth-support D in thepresentdevice terminates at the lower end with an open hook or concave recess, c, the free end of which hook has an elongated opening or slot to receive the straight portion of theshare. Such atooth-support is styles having hinging-eyes, which require a y core in casting, and said support D can be readily connected and detached from the bail aby simply hooking and unhooking. The upper portion of the share, when coupled with the share-support D, as in Fig.1, closes the open side of the hook or recess 1), thus forming a hinging-eye for the hinging-bail a. The hinging-bail ahas two eyes, through which the binding-bolts n are located. From these eyes the loop portion of the bailextends rearward and upward, thus bringing the hinge above the beams and freely allowing the hook t to bail-eyes is located a seat, r, for spring 0. It is concaved ontop, and has a recessin the end to receive the hooked end 6 of the spring 0 toprevent the spring from slipping beneath the binding-plate c". The sides of the seat 07 are concaved to fit around: the eyes of the hinging-bail a to hold said seat in place. The spring 0 consists of a curved or bowed strip of spring metal. It is hinged to the share-support D at t. A more prompt and unvarying spring action is thus obtained, as a better purchase is exerted on the spring thus located and secured in position to be contracted.

hookand the-upper end hinged to the tooth- I i support, all arranged substantially as described.

3. The share-support having the open hook, the share and the spring hinged to the upper end of said share-support and provided with the hook,in combination with the hingingbail having the eyes and'the upwardly-inclined loop, the concaved seathaving the hook-re cess, and the concave sides between the eyes of the hinging-bail andthe binding-plate, substantially as specified and shown.

4. The combination of the hinged sharesupport having the open bail-hook, a connecting-share and hinging-bail, the concave springseat, and the spring having its lower end rigidly secured in said seat and its upper end hinged to said share or ,toothsupport substantially as set forth. be connected with said bail. Between said In testimony of the foregoing I have hereunto subsc'ribed my name in the presence of two witnesses. HIRAM COBB."

Witnesses: i

ROMINE'H. BUOKHOUT, OSCAR K. BUCKHOUT. 

